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config UBIFS_FS
tristate "UBIFS file system support"
select CRC16
select CRC32
select CRYPTO if UBIFS_FS_ADVANCED_COMPR
select CRYPTO if UBIFS_FS_LZO
select CRYPTO if UBIFS_FS_ZLIB
select CRYPTO_LZO if UBIFS_FS_LZO
select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
depends on MTD_UBI
help
UBIFS is a file system for flash devices which works on top of UBI.
config UBIFS_FS_XATTR
bool "Extended attributes support"
depends on UBIFS_FS
help
This option enables support of extended attributes.
config UBIFS_FS_ADVANCED_COMPR
bool "Advanced compression options"
depends on UBIFS_FS
help
This option allows to explicitly choose which compressions, if any,
are enabled in UBIFS. Removing compressors means inability to read
existing file systems.
If unsure, say 'N'.
config UBIFS_FS_LZO
bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
depends on UBIFS_FS
default y
help
LZO compressor is generally faster than zlib but compresses worse.
Say 'Y' if unsure.
config UBIFS_FS_ZLIB
bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
depends on UBIFS_FS
default y
help
Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
# Debugging-related stuff
config UBIFS_FS_DEBUG
bool "Enable debugging"
depends on UBIFS_FS
select DEBUG_FS
select KALLSYMS_ALL
help
This option enables UBIFS debugging.
config UBIFS_FS_DEBUG_MSG_LVL
int "Default message level (0 = no extra messages, 3 = lots)"
depends on UBIFS_FS_DEBUG
default "0"
help
This controls the amount of debugging messages produced by UBIFS.
If reporting bugs, please try to have available a full dump of the
messages at level 1 while the misbehaviour was occurring. Level 2
may become necessary if level 1 messages were not enough to find the
bug. Generally Level 3 should be avoided.
config UBIFS_FS_DEBUG_CHKS
bool "Enable extra checks"
depends on UBIFS_FS_DEBUG
help
If extra checks are enabled UBIFS will check the consistency of its
internal data structures during operation. However, UBIFS performance
is dramatically slower when this option is selected especially if the
file system is large.
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